Source : WordNet®

orca
     n : predatory black-and-white toothed whale with large dorsal
         fin; common in cold seas [syn: {killer whale}, {killer},
         {grampus}, {sea wolf}, {Orcinus orca}]

Source : Free On-Line Dictionary of Computing

Orca
     
        Vrije Universiteit, Amsterdam, 1986.  Similar to Modula-2, but
        with support for distributed programming using shared data
        objects, like Linda.  A 'graph' data type removes the need for
        pointers.  Version for the Amoeba OS, comes with Amoeba.
        "Orca: A Language for Distributed Processing", H.E.  Bal
         et al, SIGPLAN Notices 25(5):17-24 (May 1990).